Dodge 2008 Ram 4500 - Manual (Page 252)

Heater Only — If Equipped The mode control (at the right of the
control panel) can be set in any of the
following positions:
NOTE: To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots.
Panel
Outside air flows through the outlets located in the
instrument panel.
Manual Heating Controls
250 UNDERSTANDING YOUR INSTRUMENT PANEL